Ceph stretch mode enabling

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Hello,

I'm trying to deploy my test ceph cluster and enable stretch mode (
https://docs.ceph.com/en/latest/rados/operations/stretch-mode/). My problem
is enabling the stretch mode.
----------------------------------------------------
$ ceph mon enable_stretch_mode ceph-node-05 stretch_rule datacenter
Error EINVAL: Could not find location entry for datacenter on monitor
ceph-node-05
----------------------------------------------------
ceph-node-5 is the tiebreaker monitor

I tried to create the third datacenter and put the tiebreaker there but got
the following error:
----------------------------------------------------
root@ceph-node-01:/home/clouduser# ceph mon enable_stretch_mode
ceph-node-05 stretch_rule datacenter
Error EINVAL: there are 3datacenter's in the cluster but stretch mode
currently only works with 2!
----------------------------------------------------
An additional info:
----------------------------------------------------
Setup method: cephadm (https://docs.ceph.com/en/latest/cephadm/install/)

# ceph osd tree
ID   CLASS  WEIGHT   TYPE NAME                  STATUS  REWEIGHT  PRI-AFF
 -1         0.03998  root default
-11         0.01999      datacenter site1
 -5         0.00999          host ceph-node-01
  0    hdd  0.00999              osd.0              up   1.00000  1.00000
 -3         0.00999          host ceph-node-02
  1    hdd  0.00999              osd.1              up   1.00000  1.00000
-12         0.01999      datacenter site2
 -9         0.00999          host ceph-node-03
  3    hdd  0.00999              osd.3              up   1.00000  1.00000
 -7         0.00999          host ceph-node-04
  2    hdd  0.00999              osd.2              up   1.00000  1.00000

stretch_rule is added to the crush

# ceph mon set_location ceph-node-01 datacenter=site1
# ceph mon set_location ceph-node-02 datacenter=site1
# ceph mon set_location ceph-node-03 datacenter=site2
# ceph mon set_location ceph-node-04 datacenter=site2

# ceph versions
{
    "mon": {
        "ceph version 16.2.1 (afb9061ab4117f798c858c741efa6390e48ccf10)
pacific (stable)": 5
    },
    "mgr": {
        "ceph version 16.2.1 (afb9061ab4117f798c858c741efa6390e48ccf10)
pacific (stable)": 2
    },
    "osd": {
        "ceph version 16.2.1 (afb9061ab4117f798c858c741efa6390e48ccf10)
pacific (stable)": 4
    },
    "mds": {},
    "overall": {
        "ceph version 16.2.1 (afb9061ab4117f798c858c741efa6390e48ccf10)
pacific (stable)": 11
    }
}

Thank you for your support.

--
Best regards,
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